The system employs the free ActiveX graphics control of AutoCAD, Whip, and its special vector drawing file format of DWF, to publish the 2D engineering drawings to the Web.

• 本系统采用AutoCAD的免费ActiveX图形浏览控件Whip! ，以其专用的DWF矢量文件格式，实现了二维工程图的网络发布。